Air-washer.



S. R. SHELDON.

AIR WASHER. APPLICATION FILED JULY 30, 1912.

Patented May 20, 1913.

W/TNCSJES. lNVE/VTOR QOLUIIIA PLANOGIAPH CO" WASHINGTON. D. C.

UNITED sTA s PATENT OFFICE. l

sr'nivnv RANDOLPH SHELDON, or eALnoNrARIo, CANADA.

AIR-WASHER.

Specification of Letters Patent.

AppIication filed July 30, 1912. Serial No. "212,346.

To all whom it may concern Be it known that I, SIDNEY RANDOLPH 1SHELDON, of the town of Galt, in the county of Waterloo, in the Provinceof Ontario, Canada, have lnvented certain new and useful Improvementsin'Air-Washers, of which r the following is the specification.

My invention relates to improvements in air washers and the object ofthe invention is to use the head or pressure created by the circulatingpump of the air washer for operating the flushing mechanism of the sprayI side wall partially removed. Fig. 3, is a de-. tail elevation of thevalve and the operating.

heads and it consists essentially of a series of spray heads arranged ina vertical plane so that the spray therefrom forms a vertical sheet ofwater, a centrifugal pump and 1 pipes leading to the spray heads forsupplying the same with water, a valve and operating mechanism thereforoperated by the falling water, a pipe connecting the valve to the pumpand pipes connecting the valve f. with the spray heads to operate theflush mechanism thereof at predetermined intervals as hereinafter moreparticularly ex- 'plained by the following specification.

Figure 1, is a face elevation of an air washer. Fig. 2, is a sideelevation with the mechanism therefor. Fig. 4 is a longitudinal sectionthrough the valve. Fig. 5, is a cross section, on line w-y Fig. 4. Fig.6, is a sectional detail of a spray head.

In the drawingslike letters of reference indicate corresponding parts ineach figure.

A is theframe of the air washer provided with the usual screens A andwater tank A B is a centrifugal pump designed to force water from thetankA through the pipes B- and B to the feed pipes B leading to thespray head's.

C are the spray heads which comprise the tubular portion C and a centralchamber G into which the feed pipes B lead.

0 is the central operating spindle of the. spray head provided at oneend with a spray nut C and operating diaphragms C.

' and C at the other end. The diaphragms are secured at their edge intheenlargement G of the spray head. The spindle C is journaled in alongitudinal bearing 0* spray head. It will forming part of themaincasting of the p be seen that when water is sup plied through thefeed pipes 13 that such water is forced through the annular open-PatentedMay20,1913.

ing G between the spray nut C and the tubular portionC of the maincasting of the spray head. As such water is driven (see Fig. 4c) and atthe opposite end with a 7 covering cap D having a central orifice D. D1s a feed pipe designed 'to convey water from the pipe B of thecentrifugal pump to the valve D.

E is the inner turnable member of the valve (see Fig. 4). The turnablemember E is tubular and is provided at one end with an operating spindleE. The opposite end of the turnable member'E is open so that the waterpassing from the feed pipe D is fed into the center of the turnablemember.

E is an opening (see Fig. 5) leading through the wall of the turnablemember.

E is a channel formed longitudinally in the periphery of the turnablemember.

F. and E are vertical pipes leading from the outer casing D of the valveD.

E are branch pipes extending-from the pipe E and provided withsupplemental branch pipes E leading into the enlargement Cf of the sprayhead behind the diaphragm C The pipes E extend vertically upwardly abovethe uppermost row of spray F is a link connecting the arm F with theforward end of the pan F.

heads 0. 1

F is a tiltable pan journaled on trunnions F.

F is an arm secured on the end of the spindle E.

F is a counterweight secured to the opposite end of the pan.

It will be understood that the valveis normally in the position showninthe drawing.

The water supplied by the centrifugal pump;

passes into the portion G of the spray head so as to exert pressureagainst a smaller diaphragm C The pan F is gradually filled with waterfalling from the spray heads until the weight of the water in theforward end of the pan ove-rbalances the counterweight F The pan thentips down in the direction of arrow (see Fig. 3) turning the spindle Eand inner turnable valve member E until the opening E is broughtopposite the pipe E The water pressure then passes from the pipe Dthrough the center of the turnable member E and pipe E to the back ofthe large diaphragm It will be readily understood that the pressureagainst the large diaphragm C will overcome the pressure against thesmaller diaphragm C and will, therefore, carry the spindle G in thedirection of arrow to flush the spray head. As soon as the pan F becomesempty, of course, it will return to its normal position by means of thecounterweight F. When in such position the longitudinal passage E of theturnable member E of the valve will connect the pipe E with the pipe Eallowing the water pressure on the diaphragm C to be relieved to theatmosphere through the pipe E. It will thus be seen that when'the valveis turned to the flushing position, the pipe E is always full of water,and therefore, water pressure i8 immediately conveyed to the diaphragmIt will, of course, be understood that the operation has to be repeateda few times when starting the machine to fill the pipes E The pipe IEwill then always be maintained full of water and also the space at theback of the diaphragm C will be full of water when the diaphragm is inits released position.

From this description it will be seen that I have devised a simple formof air washer which will be operated only by water pressure and thatthere will be practically no consumption water in the volume to operatethe machine.

lVhat I claim as my invention is 1. An air washer comprising a series ofspray heads having spray openings, and a flush mechanism whereby suchopenings are enlarged, a valve, and means for operating the valve atpredetermined intervals to sup-.

ply water pressure to the spray heads for operating the flush mechanismthereof, as and for the purpose specified.

2. An air washer comprising a series of spray heads having sprayopenings, and a flush mechanism whereby such openings are enlarged, avalve, means for operating the valve at predetermined intervals tosupply water pressure to the spray heads for operating the flushmechanism thereof, and means for automatically releasing such waterpressure to the atmosphere when the valve is carried to its normalposition, as and for the purpose specified.

3. In an air washer, the combination with a spray head having a sprayopening, a

the spray head to form the spray, and eXert pressure against the minormember, of a valve, and means controlled by the valve for conveyingwater pressure to one side of the major member to oppose the pressureagainst the minor member and carry the spindle longitudinally, and meansfor re lieving the pressure against the major member to the atmospherewhen the valve is in its normal position, as and for the purposespecified.

5. In an air washer, the combination with a spray head having a majorand a minor diaphragm, of means for conveying water to the spray head toform the spray and exert pressure against the minor diaphragm, of avalve designed to convey water pressure against the major diaphragm tooppose the pressure against the minor diaphragm, means for relieving thepressure against the major diaphragm to the atmosphere when the valve isin its normal position, and means for operating the valve by the waterfalling from the spray head, as and for the purpose specified.

6. In an air washer, the combination with a series of spray headsprovided with spray openings, each having a major and a minor diaphragm,means for delivering water to said spray heads in contact with the minordiaphragm constantly, and means for intermittently delivering water tosaid heads in contact with the major diaphragm to automatically flushsaid heads periodically.

7. In an air moistener, the combination with spray heads, of a valvecasing having an inlet opening, a pipe leading from the valve casing tothe spray heads, a pipe leading from the valve casing to the atmosphereabove the spray heads, and an inner valve member designed to alternatelycon-- nect the inlet to the pipe leading to the spray heads, and to cutoff the inlet from the pipe leading to the spray head and simultaneouslyconnect the pipe leading to thespray heads to the pipe leading to theatmosphere above the spray heads, as and for the purpose specified.

8. In a control device for spray heads for air washers, a series ofspray heads, a valve casing having an inlet opening, a pipe lead, ingfrom the valve casing to the spray heads, a pipe leading from the valvecasing to the 5 the pipe leading to the spray heads and simultaneouslyconnect the pipe leading to the spray head to the pipe leading to theatmosphere, and means for reciprocating the inner valve member, as andfor the purpose specified.

9. In a control device for spray heads for air Washers, a series ofspray heads, a valve casing having an inlet opening, a pipe leading fromthe valve casing to the spray heads,

a pipe leading from the valve casing to the atmosphere above the sprayheads, a tiltable pan designed to receive water and tilt when full,means for holding the pan normally level when empty, a turnable valvemember, a suitable connection between the pan and the turnable valvemember, and means in the turnable member for alternately connectingtheinlet with the spray pipe, and

the spray pipe with the pipe leading to the atmosphere, andsimultaneously cut oil the valve inlet from the spray pipe when operatedby the pan, as and for the purpose specified.

In testimony whereof I have signed my v name to this specification, inthe presence of twowitnesses.

SIDNEY RANDOLPH SHELDON.

Witnesses:

ROBERT DoNALosoN, J. A. STEPHENSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

. Washington, I). C.

